{
  "name": "github_lead_lag_timeseries",
  "version": "1.0.0",
  "description": "GitHub repository event sequences for push/create, fork, and star activities.",
  "license": "CC BY 4.0",
  "homepage": "https://lead-lag-forecasting.github.io",
  "data_sources": {
    "events": {
      "origin": "GH Archive (https://www.gharchive.org/) on Google BigQuery",
      "coverage": "424M repositories from 2011-02-12 to 2024-12-31",
      "processing": [
        "PushEvents, CreateEvents, WatchEvents (stars), and ForkEvents are selected.",
        "Each type of events are aggregated on daily basis to form time series."
      ]
    },
    "repository_metadata": {
      "origin": "Ecosyste.ms open-access dump (https://packages.ecosyste.ms/open-data)",
      "coverage": "2007-10-29 to 2024-06-04",
      "processing": [
        "3M package repositories from 2011-02-12 to 2024-06-04 are selected.",
        "Associated package platforms and the created dates of the repositories are extracted."
      ]
    },
    "merge": [
      "Left join between Ecosyste.ms and GH Archive records."
    ]
  },
  "features": {
    "id": {
      "type": "string",
      "description": "Repository identifier: owner_name/repo_name",
      "extraction": "From Ecosyste.ms metadata"
    },
    "platform": {
      "type": "list[string]",
      "description": "List of platforms the repo was released on (e.g. PyPI, npm)",
      "extraction": "From Ecosyste.ms metadata"
    },
    "created_date": {
      "type": "timestamp",
      "description": "Date of GitHub repository creation",
      "extraction": "From Ecosyste.ms metadata"
    },
    "first_create": {
      "type": "float",
      "description": "Days between first CreateEvent (repo, branch, or tag creation) and creation date, !=0 implies anomaly",
      "extraction": "Comparison between GH Archive CreateEvent data and Ecosyste.ms metadata"
    },
    "first_push": {
      "type": "float",
      "description": "Days between first PushEvent and creation date, <0 implies anomaly",
      "extraction": "Comparison between GH Archive PushEvent data and Ecosyste.ms metadata"
    },
    "first_star": {
      "type": "float",
      "description": "Days between first WatchEvent (star) and creation date, <0 implies anomaly",
      "extraction": "Comparison between GH Archive WatchEvent data and Ecosyste.ms metadata"
    },
    "first_fork": {
      "type": "float",
      "description": "Days between first ForkEvent and creation date, <0 implies anomaly",
      "extraction": "Comparison between GH Archive ForkEvent data and Ecosyste.ms metadata"
    },
    "cumulative_pushes_w_creates": {
      "type": "list[int]",
      "description": "Daily cumulative pushes + creates (of repo, branches, and tags) since creation date",
      "extraction": "Summed per day from GH Archive events"
    },
    "cumulative_pushes": {
      "type": "list[int]",
      "description": "Daily cumulative pushes without CreateEvents since creation date",
      "extraction": "Summed per day from GH Archive events"
    },
    "cumulative_stars": {
      "type": "list[int]",
      "description": "Daily cumulative WatchEvents (stars) since creation date",
      "extraction": "Summed per day from GH Archive events"
    },
    "cumulative_forks": {
      "type": "list[int]",
      "description": "Daily cumulative forks since creation date",
      "extraction": "Summed per day from GH Archive events"
    }
  },
  "splits": {
    "train": {
      "description": "Random sample from labeled packages with >=5 years of activity and no anomalies",
      "num_examples": 938567
    },
    "val": {
      "description": "Random validation subset",
      "num_examples": 234615
    },
    "test": {
      "description": "Random test subset",
      "num_examples": 234640
    },
    "unlabeled_test": {
      "description": "Repositories with <5 years of activity",
      "num_examples": 1568622
    },
    "train_extra": {
      "description": "Repositories with anomalies",
      "num_examples": 58077
    }
  },
  "access_instructions": [
    "Download from https://lead-lag-forecasting.github.io"
  ]
}